Valve.



No. 804,913. PATENTED NOV. 21, 1905.

P. ALLAN.

VALVE.

APPLICATION FILED APR. 19,1904.

2 SHEETS-SHEET 1.

a j i Witnesses:-

, MWQZ! PATENTED NOV. 21, 1905.

. LAN.

APPLIO ED APR. 19,1904.

2 SHEETS-SHEET 2.

- UNITED STATES PATENT oEEIoE.

PERor ALLAN, OF MONTCLAIR, NEw JERSEY, ASSIGNOR TO JENKINS }-M-ANUFAOTURING COMPANY, or BLOOMFIELD, NEW JERSEY, A

VALVE.

Specification of Letters Patent.

Patented Nov. 21, 1905.

Application filed April 19, 1904. Serial No. 203,823.

To all whom, it may concern:

Be it known that I, PERCY ALLAN, a citizen of the United States, residing in Montclair, in the State of New Jersey, have invented certain new and useful Improvements in Valves, of which the followingis a specification, reference being bad to the accompanying drawings, forming a part hereof.

This invention relates to valves of the class or type known as mixing-valves or antiscalding valves, the Same being used commonly as a bath-room accessory for the admission to the bath-tub or shower of either hot water or cold water separately, or of the two together, in such proportions as to secure the desired temperature in the mixture.

The special object in View in this invention is to simplify and improve the construction and operation of such valves, although some of the features of construction may be applied to valves intended for other specific uses.

The invention will be fully described hereinafter with reference to the accompanying drawings, in which for purposes of illustration and explanation of the nature of the invention it is illustrated as embodied in a convenient and practical form.

In the drawings, Figure lis a view in horizontal central section of a valve which embodies the invention. Fig. 2 is a view of the same in vertical central section on the plane indicated by the line 2 2 of Fig. 1. Fig. 3 is a face view of the valve.

The shell or body a of the valve, which may be formed in any suitable manner, is provided with an inletb for cold water and an inletc for hot water. It may also be provided with two outlets, as shown at d and e in Fig. 2, either or both of which may be used, as desired. The inlets b and 0 communicate, respectively, by coredpassages within the shell or body of the valve with ports f and 9, formed in the opposite walls of the inner body orcentral portion 72 which is provided with a seat for the valve-plug and with a central outletport it, which communicates through a suitable cored passage, as clearly shown in Fig. 2, with the outlets d and e. As will be observed by referring to Fig. 1, the ports f and g are offset or communicate with the interior of the inner body it at different points for a purpose presently to be described. The valveplug Z is hollow and closed at both ends, as

shown in Figs. 1 and 2, and is provided with inlet-ports m and outlet-ports 0 and may carry upon its closed end a washer 0 to make a tight closure against the valve-seat z. The hollow valve-plug Z may be formed in one piece with the valve-stem g, which is provided with a suitable handle 0, as usual, and may have the usual threaded engagement with the valve body or shell (0, as indicated at 8, whereby the rotation of the hand-wheel 4' causes the valve-plug to be withdrawn from its seat or advanced to its seat, as desired. The ports m in the construction shown are formed directly opposite each other in the valve-plug, and one of them may partly overlap the corresponding port f in the inner body portion of the valve when the valve-plug is pressed against its seat, as shown in Fig. 1, so that the interior of the valve-plug shall be at that time in communication with the coldwater supply, and the cold water shall therefore be allowed to flow first when the valveplug is withdrawn from its seat 2', thereby preventing all danger of scalding through an accidental admission of the hot water first. As the movement of the valve-plug from its seat is continued the ports at are first brought into full registration with the port f, thereby allowing a free flow of cold water, and thereafter the ports at overlap and then register fully with the port g, thereby permitting a gradually-increased flow of hot water, while the fiow of cold water is correspondingly reduced until, if desired, a flow of hot water alone is secured. When the valve-plug is advanced toward its seat, the flow of hot water is gradually reduced and finally cut off altogether, and the flow of cold water is at first increased and then reduced and finally cut oii altogether when the valve-plug reaches its seat c'. It is also obvious that the ports might have such relative arrangement as to cut off altogether the flow of either hot or cold water without the use of the washer p and the valve seat 2'; but the construction shown permits the valve to be somewhat more compact and also enables a tight closure to be made.

Other variations of form and construction of the various parts will readily suggest themselves and may be made without departing from the spirit of the invention.

I claim as my invention I In a mixing-valve the combination of a shell or body provided with separate oppositelyranged in the same vertical plane adapted to arranged inlets for hot and cold water and an register with the offset ports and having a outlet in the same vertical plane with the inport to communicate with the chamber, sublets, of an inner body having offset ports comstantially as described. 5 Inunicating respectively with the inlets and This specification signed and witnessed this havinghan outlet at one end coglrnunhicating 16th day of April, A. D. 1904. with t e outlet, a Va ve-seat an a 0 am er between the valve-seat and the offset ports, Y ALLAN and a longitudinally-movable hollow valve- In presence of IO plug closed at its inner end to cooperate with J OEL JENKINS, the valve-seat, having a series of ports ar- M. M. WAY. 

